Pith Number

pith:LMV7D463

pith:2026:LMV7D463KFE473ZZ473IDY573A

not attested not anchored not stored refs pending

Legal Infrastructure Organizes Eviction: Evidence from Philadelphia

Marios Papamichalis, Regina Ruane

Eviction in Philadelphia is organized upstream by a concentrated plaintiff-side legal infrastructure of dominant attorneys and repeat property filings.

arxiv:2604.21212 v3 · 2026-04-23 · stat.AP

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\usepackage{pith}
\pithnumber{LMV7D463KFE473ZZ473IDY573A}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

eviction is organized upstream by a concentrated plaintiff-side bar, durable plaintiff--attorney dependence, repeated use of the same properties, and repeat exposure of tenants to the court system. In 1983--2022, the ten most active plaintiff attorneys handled an average of 82.0% of represented plaintiff-side cases, compared with 14.7% for the ten most active plaintiffs.

C2weakest assumption

That the observed docket patterns reflect organized legal infrastructure rather than artifacts of recording practices, unmeasured selection into the court system, or simple correlation without upstream causation.

C3one line summary

Philadelphia eviction filings are dominated by a concentrated plaintiff bar (top 10 attorneys handle 82% of represented cases) and repeat addresses (50.6% have a prior filing within one year).

Cited by

1 paper in Pith

High-Volume Plaintiff-Side Counsel and Single-Appearance Eviction Cases in Philadelphia

Receipt and verification

First computed	2026-05-21T01:04:26.080017Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5b2bf1f3db5149cfef39e7f681e3bfd81f17e3e7e67f00a475a28fa5e97de737

Aliases

arxiv: 2604.21212 · arxiv_version: 2604.21212v3 · doi: 10.48550/arxiv.2604.21212 · pith_short_12: LMV7D463KFE4 · pith_short_16: LMV7D463KFE473ZZ · pith_short_8: LMV7D463

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/LMV7D463KFE473ZZ473IDY573A \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 5b2bf1f3db5149cfef39e7f681e3bfd81f17e3e7e67f00a475a28fa5e97de737

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75e5397b4738f61f78249e168ae6aff0f2d97fb52093d122e691f1ba06559ec8",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2026-04-23T02:06:36Z",
    "title_canon_sha256": "1670306d2112bbdafa42a5dc8ceb6a62679400fc4ec9f7a9d1209515e3d54d6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.21212",
    "kind": "arxiv",
    "version": 3
  }
}